Home / 5,378.13-7,422.18-2,988.45

Finding the Fourth Proportional to 5,378.13, 7,422.18 and 2,988.45

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Solution

The fourth proportional to 5,378.13, 7,422.18 and 2,988.45 is: 4,124.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.13 : 7,422.18 = 2,988.45 : x
  2. Step 2: Convert to fraction form
    5,378.13/7,422.18 = 2,988.45/x
  3. Step 3: Cross multiply
    5,378.13x = 7,422.18 × 2,988.45
  4. Step 4: Simplify right side
    5,378.13x = 22,180,813.82
  5. Step 5: Solve for x
    x = 22,180,813.82/5,378.13
  6. Step 6: Final answer
    x = 4,124.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.